U.S. patent application number 15/837940 was filed with the patent office on 2018-06-14 for mixer with impinging co-axial streams.
This patent application is currently assigned to Gas Technology Institute. The applicant listed for this patent is Gas Technology Institute. Invention is credited to Anthony Eastland, Jeffrey A. MAYS, John C. Vega, III.
Application Number | 20180161739 15/837940 |
Document ID | / |
Family ID | 62487599 |
Filed Date | 2018-06-14 |
United States Patent
Application |
20180161739 |
Kind Code |
A1 |
MAYS; Jeffrey A. ; et
al. |
June 14, 2018 |
MIXER WITH IMPINGING CO-AXIAL STREAMS
Abstract
A mixer for separate streams of gas includes a center stream of
a first gas and a co-axial stream of a second gas injected at an
angle to the center stream and filling an annulus around the center
stream. The mixer may further include a feed zone wherein the first
gas is introduced into the mixer as the center stream and the
second gas is introduced into the mixer as the co-axial stream
filling the annulus around the center stream; a mixing zone wherein
the first gas and the second gas mix with no recirculation zones to
form a mixture; and a diffusion zone for advancing the mixture from
the mixing zone. Corresponding or associated methods for mixing
materials are also provided.
Inventors: |
MAYS; Jeffrey A.; (Woodland
Hills, CA) ; Vega, III; John C.; (Camarillo, CA)
; Eastland; Anthony; (Moorpark, CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Gas Technology Institute |
Des Plaines |
IL |
US |
|
|
Assignee: |
Gas Technology Institute
Des Plaines
IL
|
Family ID: |
62487599 |
Appl. No.: |
15/837940 |
Filed: |
December 11, 2017 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
62431950 |
Dec 9, 2016 |
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B01F 5/0471 20130101;
B01F 3/02 20130101; B01F 3/026 20130101; B01F 5/0652 20130101; F02M
21/00 20130101; F23D 11/402 20130101; B01F 5/0262 20130101; B01F
2215/0085 20130101 |
International
Class: |
B01F 5/04 20060101
B01F005/04; B01F 3/02 20060101 B01F003/02 |
Claims
1. A mixer for separate streams of gas comprising: a center stream
of a first gas; and a co-axial stream of a second gas injected at
an angle to the center stream and filling an annulus around the
center stream.
2. The mixer of claim 1, wherein the mixer includes: a feed zone
wherein the first gas is introduced into the mixer as the center
stream and the second gas is introduced into the mixer as the
co-axial stream filling the annulus around the center stream; a
mixing zone wherein the first gas and the second gas mix with no
recirculation zones to form a mixture; and a diffusion zone for
advancing the mixture from the mixing zone.
3. The mixer of claim 1 wherein the first gas is oxygen.
4. The mixer of claim 1 wherein the second gas is a fuel gas.
5. The mixer of claim 1 wherein the angle of injection of the
second gas injected to the center stream is selected to enhance
mixing.
6. A method for co-axially mixing separate streams of gas, the
method comprising: introducing a first gas as a center stream in a
co-axial mixer, introducing a second gas as a co-axial stream at an
angle to the center stream and filling an annulus around the center
stream, and mixing the first and second gases to form a mixture
with no recirculation zones.
Description
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of U.S. Provisional
Application Ser. No. 62/431,950, filed on 9 Dec. 2016. The
co-pending Provisional Patent Application is hereby incorporated by
reference herein in its entirety and is made a part hereto,
including but not limited to those portions which specifically
appear hereinafter.
BACKGROUND OF THE INVENTION
Field of the Invention
[0002] This invention relates generally to a mixing and, more
particularly, to devices and methods that desirably produce or
result in rapid, complete mixing in a short distance and/or
time.
Description of Related Art
[0003] Mixing of components or ingredients is involved in many
chemical processing systems and arrangements. For example, a
combustible mixture can be created by mixing two components or
reactants such as a fuel and an oxidant. If the velocity is high
and there are no stagnation/recirculation zones, the mix will not
have sufficient time to ignite and burn. Current techniques,
however, may lead to unintended combustion. One such current mixing
technique is a jet in a crossflow. This has not shown to be
sufficient to date. Preferred mix processing desirably produces,
achieves or results in rapid mixing to a uniform mixture with no
recirculation zones.
SUMMARY OF THE INVENTION
[0004] An impinging co-axial mixer according to a preferred
embodiment of this invention produces or results in rapid, complete
mixing in a very short distance/time for chemical processing. It is
preferably a mixer for separate streams with particular application
to gas-to-gas mixing. It works by mixing two streams: (1) one
stream is a center stream: and (2) a second stream co-axially
filling an annulus around the central stream.
[0005] In accordance with another aspect of the subject invention,
a method for co-axially mixing separate streams of gas in provided.
In one preferred embodiment, such a method involves introducing a
first gas as a center stream in a co-axial mixer. A second gas is
introduced as a co-axial stream at an angle to the center stream
and fills an annulus around the center stream. The first and second
gases are mixed to form a mixture with no recirculation zones.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Objects and features of this invention will be better
understood from the following description taken in conjunction with
the drawings, wherein:
[0007] FIG. 1 is a simplified schematic showing a mixer in
accordance with aspect of the subject invention.
DETAILED DESCRIPTION
[0008] As shown in FIG. 1, an impinging co-axial mixer according to
a preferred embodiment preferably includes a mixer, generally
designated by the reference numeral 10, for separate streams with
particular application to gas-to-gas mixing. The mixer 10 generally
includes a feed or introduction zone 12 wherein feed materials or
components are fed or introduced into the mixer 10, a mixing zone
14 wherein feed materials or components introduced into the mixer
10 are appropriately combined and mixed and a diffusion zone 16
wherein the mixture of materials or components resulting from the
mixing zone 14 are appropriately advanced. The mixer 10 works by
mixing two streams: (1) a first stream 20, e.g., a center stream;
and (2) a second stream 22 coaxially filling an annulus around the
central stream as shown in the attached schematic.
[0009] While mixer 10 shown in FIG. 1 illustrates the first or
center stream 20 as composed of oxygen and the second or annulus
stream 22 as composed of fuel, those skilled in the art and guided
by the teaching herein provided will understand and appreciate that
the broader practice of the subject development is not necessarily
so limited.
[0010] In addition to mixing driven by different velocities of the
two streams such as may be typical of co-axial mixers, with an
impinging co-axial mixer in accordance with the subject
development, an angle to the flow of the annular stream such as
directing the annular stream into the central stream can be
suitably selected and tailored such as to desirably enhance the
resulting mixing. Also, the shape of the mixing zone can be varied
to inhibit recirculation. Thus, in accordance with a preferred
aspect of the invention, the mixer and processing of the invention
result or produce rapid mixing to a uniform mixture with no
recirculation zones.
[0011] While in the foregoing specification the subject development
has been described in relation to certain preferred embodiments
thereof, and many details have been set forth for purpose of
illustration, it will be apparent to those skilled in the art that
the invention is susceptible to additional embodiments and that
certain of the details described herein can be varied considerably
without departing from the basic principles of the invention.
* * * * *